(setq ndk-list-to-paragraph-file-list '("/home/nick/src/org/list/to-paragraph/derek-thomas.org"))

(defun org-list-to-paragraph ()
  "Convert the list at point into a paragraph."
  (interactive)
  (insert (org-list-to-generic (org-list-parse-list t) '(:ustart "" :splice t :isep " " :nobr t ))))

(defun ndk-buffer-file-name ()
  ;;; if called from inside org-export-preprocess-string
  ;;; source-buffer will be bound to the original org buffer, not the temp buffer
  ;;; otherwise assume we want to operate on the current buffer
  ;;; don't bother telling me how ugly this is - I know
  ;;; but do bother telling me about a better way to do it.
  (if (boundp 'source-buffer)
      (buffer-file-name source-buffer)
    (buffer-file-name (current-buffer))))

(defun org-lists-to-paragraphs ()
  (if (not (member (ndk-buffer-file-name) ndk-list-to-paragraph-file-list))
      nil
    (goto-char (point-min))
    (condition-case nil
	(while (org-list-search-forward "+ ")
	  (org-list-to-paragraph))
      (error nil))))

(add-hook 'org-export-preprocess-hook (function org-lists-to-paragraphs))